Cylinder for gasoline engines



1,638,852 Aug- 1927' w. B. HILGER CYLINDER FOR GASOLINE mamas FiledMarch 31, 1924 4 Sheets-Sheet 1 Es 2/ /7 7 22 Z Z 7 Aug. 16, 1927.

W. B. HILGER ,CYLINDER FOR GASOLINE ENGINES Filed March 31. 1924 4Sheets-Sheat 2 F76.4 2 2/ 7 o f 2 k j Z M 53 K 2 V 24 f7 .6; A; i t

' 1,638,852 1927- w. B. HILGER CYLINDER FOR GASOLINE ENGINES Filed March31, 1924 4'Sheets-Sheet 3 Aug. 16, 1927.

v 1,638,852 I w. B. HILGER CYLINDER FOR GASOLINE ENGINES Filed March 51,1924 4 Sheets-Sheet 4 7 2 v I Z 2 5 any 7 X q lllfllln: /Z T 221:: f

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Patented Aug. 16 1927.

UNITED STATES WILLIAM B. HILGEB,

or 3mm, IOWA.

CYLINDER ron easouxa mamas.

Application filed March 31, 1924.. Serial Io. 708,014.

This invention relates to improvements in cylinders for gasoline enginesand the primary object is to provide sleeves to slidingly operate withinthe walls of the cylinders 5 relative to the position of the pistons andactuated by means of cams mounted upon the cam shaft located at the sideof the cylinders. Another object is to provide sleeves of such designand construction as to per- 10 mit mounting the spark plugs in theirheads.

A still further object is to fire the compressed gasoline after thepiston rods have passed the dead center upon the down stroke, so as tosave the power which is exerted upon the piston while the piston ispassing over dead center and to minimize the friction created by theexplosion u on the piston during the vertical position the piston rodand thus give the greatest amount of power obtainable from the leastamount of combustible material. These and other objects will be apparentfrom the accompanying drawings and specification.

Inthe drawing Figure 1 is side elevation of an engine equipped with thisimprovemet showin the cam shaft, spring set valve stems and the springset sleeve actuating rods;

Figure through the water jacket and staggered valves, a section beingbroken away to show the intake and exhaust ports of the sleeves; NFigure3 is a vertical section of, cylinder 0. 1; NFigure 4 is a verticalsection of cylinder 0. 3; x Figure 5 is a vertical section of cylinderNo. 4.

Fig, 6 is a vertical section of cylinder N0. 2;

Figure Figure 8 mechanism;

Figure 9 is a detail of a cam that operates the sleeve actuatingmechanism;

Figure is adetail of the staggered intake and exhaust valves;

Figures 11, 12, 13, 14, and 16 are diagrammatic viewsshowing therelative position of the sleeves and sleeve operating mechanisms withthe pistons and the crank shaft.

In carrying out this improvement upon a gasoline englne, I providesleeves 1 having intake and exhaust ports 2 and ears 3. The sleevesl areadapted to engage the walls of the cylinders 4. Threaded holes 5 arepro- 7 is a detail of a sleeve.

is a detail of a sleeve actuating 2 is a longitudinal vertical sectionvvided in the heads 6 oi the sleeves 1 to ermit the mounting of sparkplugs 7. istons 8 slidingly en age the inner periphery of the sleeves 1.taggered intake valve 9 and exhaust valves 10 are located in the upperportion at the side of the cylinder block 11' and communicate with theinside of the sleeves 1 throu h valve chambers 12 and the intake anexhaust ports 2. A cam shaft 13-having valve stem cams 14 ri idlysecured thereto, is journaled at "the side of the cylinder-block 11below the staggered intake valves 9 and exhaust valves 10. Spring setvalve stems 16 engage the valve stem cams 14 to operate the staggeredintake valves 9 and exhaust-valves 10. Cams 15 are rigidly secured tothe cam shaft 13. Rises 24 are incorporated in the cams 15 and sodesigned to time the vertical motion of the sleeves 1 in relation to therevolutions of the crank shaft 25. Brackets 17 are incorporated in theupper portion of the cylinder block 11 on the side of the staggeredintake and exhaust valves 9 and 10. Adjustable spring set rods 18 havingeyelets 19 incorporated in their upper portions and rollers 20-mountedin their lower ortions engage the cams 15 of the cam "shag 13. Primarylinks 21 engage the eyelets 19 vof the adjustable spring set rods 18 andthe ears 3 of the sleeves 1. Secondary links 22 engage the primary links21 and the brackets 17 of the cylinder block 11. An insulated copper rod23 is mounted upo the top of the cylinder block 11 opposite he sta geredintake and exhaust valves 9 and 10 %or providing the spark plugs 7 withelectricity for ignition purposes.

In operation, the sleeves 1 are actuated by the cams 15 throughthemedium of the adjustable spring set rods 18 and the primary links 21.The relative positions of the sleeves 1 with the pistons 8 are asfollows: Upon the intake of gasoline into the sleeves 1, the saidsleeves 1 are at the top of the cylinders 4 and remain there unt l thepistons 8 have reached the'top of the compression stroke, whereupon thesleeves 1 begin to move downward with the pistons 8 at a slightly fasterrate and gaina trifle on the pistons 8, thereby increasing thecompression of the compressed gasoline until the spark plugs 7 mountedin the heads 6 of the sleeves 1 come in contact with the insulatedcopper rod 23 to ignite the compressed gasoline At the beginning of theexhaust stroke the sleeves 1 raise a trifle, thereby completely openingthe valve chamhere 12 of the valves 10 to permit the. exhaust gases toescape, and remain in that position until the pistons 8 are withinapproximately one-half of an inch of the sleeve heads, so as to forcepractically all of the exhaust gases out of the sleeves whereupon thesaidsleeves 1 raise to the top of the cylinders 4 to permit the intakeof gasoline through the valves'9 upon the downward stroke of the saidpistons 8 as illustrated in Figures 11, 12, 13, 14, 15 and 16.

While I have herein described a certain specific method of constructingand assembling the elements of my invention, it is understood same maybe varied in minor details, not departing from the spirit of myinvention as defined in the appended claims.

I claim:

1. In a device of the kind described embodying in conjunction with thecylinder block of a combustion engine, sleeves engaging the innerperiphery of the cylinders of said block, said sleeves being providedwith peripheral apertures near their heads adapted to communicate withstaggered intake and exhaust valve chambers; and a cam shaft and cammeans for reciprocating said sleeves.

2. In a device of the kind described, a

sleeve formed with a head engaging the inner periphery of the cylindersof an internal combustion engine, said sleeve being provided withperipheral apertures for communcatingv with the intake and exhaustchambers of said engine; and a cam shaft and cam means operated by saidengine for depressing said sleeve at the time of compression for holdingcompression to enable delaying the firing of the compressed combustiblematerial until the crankshaft has passed dead center.

3. In a device of the kind described, a movable cylinder sleeve formedwith a head adapted for internal engagement by the piston, said sleevebeing formed with lateral peripheral apertures adapted to communicatewith staggered intake and exhaust valves; a cam shaft and cam means fordepressing said sleeve upon the compression stroke of the piston andholding said com-' pression to facilitate retarding the igniting of thecompressed combustible materials until the crankshaft has passed deadcenter, and then raising said sleeve in the proper time forcommunication with the staggered Valves thru the peripheral apertures ofsaid sleeve.

In testimony whereof I affix my signature.

WILLIAM B. HILGER.

